/Engine/Source/Developer/TraceServices/Public/TraceServices/Model/Regions.h
Will call Callback(Lane, Depth) for each lane in order.
void EnumerateLanes ( [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< void(const [FRegionLane](API\Developer\TraceServices\TraceServices\Model\FRegionLane) &, const int32)> Callback ) const